function getStyle(obj,name)
{
	if(obj.currentStyle)
	{
		return obj.currentStyle[name];
	}
	else
		{
			return getComputedStyle(obj,false)[name];
		}
}
function startMove(obj,attr,iTarget)
{
	clearInterval(obj.timer);
	obj.timer=setInterval(function ()
	{
		var cur=0;
		if (attr=="opacity")
		{
			cur=Math.round(parseFloat(getStyle(obj,attr))*100);
		}
        else
        	{
        		cur=parseInt(getStyle(obj,attr));
			}
			var speed=(iTarget-cur)/6;
		speed=speed>0?Math.ceil(speed):Math.floor(speed);
		if(cur=iTarget)
		{
         clearInterval(obj.timer);
		}
		else
		{
			if(attr=="opacity")
			{
				obj.style.filter="alpha(opacity:"+(cur+speed)+")";
				obj.style.opacity=(cur+speed)/100;
				document.getElementById("txt1").value=obj.style.opacity;
			}
			else
			{
				obj.style[attr]=cur+speed+"px";
			}
		}
	},30)

}
